diff --git a/pkgs/applications/networking/p2p/frostwire/default.nix b/pkgs/applications/networking/p2p/frostwire/default.nix
index 40ff91e792b4..0449540eaff1 100644
--- a/pkgs/applications/networking/p2p/frostwire/default.nix
+++ b/pkgs/applications/networking/p2p/frostwire/default.nix
@@ -85,7 +85,7 @@ in stdenv.mkDerivation {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://www.frostwire.com/;
+    homepage = https://www.frostwire.com/;
     description = "BitTorrent Client and Cloud File Downloader";
     license = licenses.gpl2;
     maintainers = with maintainers; [ gavin ];
diff --git a/pkgs/applications/science/biology/itsx/default.nix b/pkgs/applications/science/biology/itsx/default.nix
index 804e71c1bfa7..0c8c7313bf2a 100644
--- a/pkgs/applications/science/biology/itsx/default.nix
+++ b/pkgs/applications/science/biology/itsx/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Improved software detection and extraction of ITS1 and ITS2 from ribosomal ITS sequences of fungi and other eukaryotes for use in environmental sequencing";
-    homepage = http://microbiology.se/software/itsx/;
+    homepage = https://microbiology.se/software/itsx/;
     license = licenses.gpl3;
     maintainers = [ maintainers.bzizou ];
     platforms = [ "x86_64-linux" "i686-linux" ];
diff --git a/pkgs/applications/science/logic/prover9/default.nix b/pkgs/applications/science/logic/prover9/default.nix
index f96532b7038b..a4538e1070a3 100644
--- a/pkgs/applications/science/logic/prover9/default.nix
+++ b/pkgs/applications/science/logic/prover9/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    homepage = http://www.cs.unm.edu/~mccune/mace4/;
+    homepage = https://www.cs.unm.edu/~mccune/mace4/;
     license = "GPL";
     description = "Automated theorem prover for first-order and equational logic";
     longDescription = ''
diff --git a/pkgs/applications/version-management/gitolite/default.nix b/pkgs/applications/version-management/gitolite/default.nix
index 78dd9dd49dfd..42c091007884 100644
--- a/pkgs/applications/version-management/gitolite/default.nix
+++ b/pkgs/applications/version-management/gitolite/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Finely-grained git repository hosting";
-    homepage    = http://gitolite.com/gitolite/index.html;
+    homepage    = https://gitolite.com/gitolite/index.html;
     license     = licenses.gpl2;
     platforms   = platforms.unix;
     maintainers = [ maintainers.thoughtpolice maintainers.lassulus maintainers.tomberek ];
diff --git a/pkgs/data/fonts/input-fonts/default.nix b/pkgs/data/fonts/input-fonts/default.nix
index 94c580c30df0..4910ef21f9ab 100644
--- a/pkgs/data/fonts/input-fonts/default.nix
+++ b/pkgs/data/fonts/input-fonts/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation rec {
 
   src = requireFile {
     name = "Input-Font.zip";
-    url = "http://input.fontbureau.com/download/";
+    url = "https://input.fontbureau.com/download/";
     sha256 = "07fkyvbb12agkb2kpnq2j45nycgbjvb4n1s5hjyqsipdh2z9zihq";
   };
 
diff --git a/pkgs/desktops/enlightenment/econnman.nix b/pkgs/desktops/enlightenment/econnman.nix
index 60e63dc68ed9..8e73682065d3 100644
--- a/pkgs/desktops/enlightenment/econnman.nix
+++ b/pkgs/desktops/enlightenment/econnman.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "A user interface for the connman network connection manager";
-    homepage = http://enlightenment.org/;
+    homepage = https://enlightenment.org/;
     maintainers = with stdenv.lib.maintainers; [ matejc tstrobel ftrvxmtrx ];
     platforms = stdenv.lib.platforms.linux;
     license = stdenv.lib.licenses.lgpl3;
diff --git a/pkgs/desktops/enlightenment/efl.nix b/pkgs/desktops/enlightenment/efl.nix
index 96395b6df2f7..a7f5eaf63392 100644
--- a/pkgs/desktops/enlightenment/efl.nix
+++ b/pkgs/desktops/enlightenment/efl.nix
@@ -87,7 +87,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Enlightenment foundation libraries";
-    homepage = http://enlightenment.org/;
+    homepage = https://enlightenment.org/;
     platforms = stdenv.lib.platforms.linux;
     license = stdenv.lib.licenses.lgpl3;
     maintainers = with stdenv.lib.maintainers; [ matejc tstrobel ftrvxmtrx ];
diff --git a/pkgs/desktops/enlightenment/rage.nix b/pkgs/desktops/enlightenment/rage.nix
index 9c3974452242..a1de3f951312 100644
--- a/pkgs/desktops/enlightenment/rage.nix
+++ b/pkgs/desktops/enlightenment/rage.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Video + Audio player along the lines of mplayer";
-    homepage = http://enlightenment.org/;
+    homepage = https://enlightenment.org/;
     maintainers = with stdenv.lib.maintainers; [ matejc ftrvxmtrx romildo ];
     platforms = stdenv.lib.platforms.linux;
     license = stdenv.lib.licenses.bsd2;
diff --git a/pkgs/development/compilers/nvidia-cg-toolkit/default.nix b/pkgs/development/compilers/nvidia-cg-toolkit/default.nix
index b6e2aea7eca5..6bd4af05da36 100644
--- a/pkgs/development/compilers/nvidia-cg-toolkit/default.nix
+++ b/pkgs/development/compilers/nvidia-cg-toolkit/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = http://developer.nvidia.com/cg-toolkit;
+    homepage = https://developer.nvidia.com/cg-toolkit;
     license = lib.licenses.unfreeRedistributable;
   };
 }
diff --git a/pkgs/development/interpreters/erlang/R16B02-basho.nix b/pkgs/development/interpreters/erlang/R16B02-basho.nix
index 714924514edb..c263551de2da 100644
--- a/pkgs/development/interpreters/erlang/R16B02-basho.nix
+++ b/pkgs/development/interpreters/erlang/R16B02-basho.nix
@@ -27,7 +27,7 @@ mkDerivation rec {
   installTargets = "install";
   postInstall = let
     manpages = pkgs.fetchurl {
-      url = "http://www.erlang.org/download/otp_doc_man_R16B02.tar.gz";
+      url = "https://www.erlang.org/download/otp_doc_man_R16B02.tar.gz";
       sha256 = "12apxjmmd591y9g9bhr97z5jbd1jarqg7wj0y2sqhl21hc1yp75p";
     };
   in ''
diff --git a/pkgs/development/interpreters/erlang/generic-builder.nix b/pkgs/development/interpreters/erlang/generic-builder.nix
index 914c3a0f5cfe..a795741869fc 100644
--- a/pkgs/development/interpreters/erlang/generic-builder.nix
+++ b/pkgs/development/interpreters/erlang/generic-builder.nix
@@ -108,8 +108,8 @@ in stdenv.mkDerivation ({
   setupHook = ./setup-hook.sh;
 
   meta = with stdenv.lib; ({
-    homepage = http://www.erlang.org/;
-    downloadPage = "http://www.erlang.org/download.html";
+    homepage = https://www.erlang.org/;
+    downloadPage = "https://www.erlang.org/download.html";
     description = "Programming language used for massively scalable soft real-time systems";
 
     longDescription = ''
diff --git a/pkgs/development/java-modules/jogl/default.nix b/pkgs/development/java-modules/jogl/default.nix
index a3c3b2bf96f6..36c4af5f4961 100644
--- a/pkgs/development/java-modules/jogl/default.nix
+++ b/pkgs/development/java-modules/jogl/default.nix
@@ -58,7 +58,7 @@ in
 
       meta = with stdenv.lib; {
         description = "Java libraries for 3D Graphics, Multimedia and Processing";
-        homepage = http://jogamp.org/;
+        homepage = https://jogamp.org/;
         license = licenses.bsd3;
         platforms = [ "x86_64-linux" ];
       };
diff --git a/pkgs/development/libraries/freetds/default.nix b/pkgs/development/libraries/freetds/default.nix
index d8bb9e8e85b0..ee63ce2f2f9e 100644
--- a/pkgs/development/libraries/freetds/default.nix
+++ b/pkgs/development/libraries/freetds/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
   version = "1.1.6";
 
   src = fetchurl {
-    url    = "http://www.freetds.org/files/stable/${name}.tar.bz2";
+    url    = "https://www.freetds.org/files/stable/${name}.tar.bz2";
     sha256 = "18rry59npbhxpzjb0l3ib7zlnlzj43srb5adcm65wyklklsh0gn2";
   };
 
diff --git a/pkgs/development/libraries/glfw/3.x.nix b/pkgs/development/libraries/glfw/3.x.nix
index 668fe436e915..13bd4a456c97 100644
--- a/pkgs/development/libraries/glfw/3.x.nix
+++ b/pkgs/development/libraries/glfw/3.x.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Multi-platform library for creating OpenGL contexts and managing input, including keyboard, mouse, joystick and time";
-    homepage = http://www.glfw.org/;
+    homepage = https://www.glfw.org/;
     license = licenses.zlib;
     maintainers = with maintainers; [ marcweber ];
     platforms = platforms.unix;
diff --git a/pkgs/development/libraries/hwloc/default.nix b/pkgs/development/libraries/hwloc/default.nix
index 5866d6b8fedb..0f4ce4e6b97c 100644
--- a/pkgs/development/libraries/hwloc/default.nix
+++ b/pkgs/development/libraries/hwloc/default.nix
@@ -15,7 +15,7 @@ in stdenv.mkDerivation {
   inherit name;
 
   src = fetchurl {
-    url = "http://www.open-mpi.org/software/hwloc/v${versmm}/downloads/${name}.tar.bz2";
+    url = "https://www.open-mpi.org/software/hwloc/v${versmm}/downloads/${name}.tar.bz2";
     sha256 = "1aa7s208gdijk19vvzzahyl8pglk1va3yd6kdbpfa5pz5ms0ag35";
   };
 
@@ -78,7 +78,7 @@ in stdenv.mkDerivation {
        more.
     '';
 
-    # http://www.open-mpi.org/projects/hwloc/license.php
+    # https://www.open-mpi.org/projects/hwloc/license.php
     license = licenses.bsd3;
     homepage = https://www.open-mpi.org/projects/hwloc/;
     maintainers = with maintainers; [ fpletz markuskowa ];
diff --git a/pkgs/development/libraries/ilmbase/default.nix b/pkgs/development/libraries/ilmbase/default.nix
index 42cf77802625..2d22788e1ecd 100644
--- a/pkgs/development/libraries/ilmbase/default.nix
+++ b/pkgs/development/libraries/ilmbase/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   doCheck = stdenv.isx86_64;
 
   meta = with stdenv.lib; {
-    homepage = http://www.openexr.com/;
+    homepage = https://www.openexr.com/;
     license = licenses.bsd3;
     platforms = platforms.all;
   };
diff --git a/pkgs/development/libraries/libnxml/default.nix b/pkgs/development/libraries/libnxml/default.nix
index 8d97a13b0a08..0a6c58c8a015 100644
--- a/pkgs/development/libraries/libnxml/default.nix
+++ b/pkgs/development/libraries/libnxml/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation {
   buildInputs = [ curl ];
 
   meta = {
-    homepage = http://www.autistici.org/bakunin/libnxml/;
+    homepage = https://www.autistici.org/bakunin/libnxml/;
     description = "C library for parsing, writing and creating XML 1.0 and 1.1 files or streams";
     license = stdenv.lib.licenses.lgpl2;
 
diff --git a/pkgs/development/libraries/libow/default.nix b/pkgs/development/libraries/libow/default.nix
index 66cb0762c25a..7797061a71aa 100644
--- a/pkgs/development/libraries/libow/default.nix
+++ b/pkgs/development/libraries/libow/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "1-Wire File System full library";
-    homepage = http://owfs.org/;
+    homepage = https://owfs.org/;
     license = licenses.gpl2;
     maintainers = with maintainers; [ disserman ];
     platforms = platforms.unix;
diff --git a/pkgs/development/libraries/liquid-dsp/default.nix b/pkgs/development/libraries/liquid-dsp/default.nix
index 391606d59e68..99ea6343d70f 100644
--- a/pkgs/development/libraries/liquid-dsp/default.nix
+++ b/pkgs/development/libraries/liquid-dsp/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook ];
 
   meta = {
-    homepage = http://liquidsdr.org/;
+    homepage = https://liquidsdr.org/;
     description = "Digital signal processing library for software-defined radios";
     license = stdenv.lib.licenses.mit;
     platforms = stdenv.lib.platforms.unix;
diff --git a/pkgs/development/libraries/openexr/default.nix b/pkgs/development/libraries/openexr/default.nix
index 54b617fdc014..072848d7bbca 100644
--- a/pkgs/development/libraries/openexr/default.nix
+++ b/pkgs/development/libraries/openexr/default.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
   doCheck = false; # fails 1 of 1 tests
 
   meta = with stdenv.lib; {
-    homepage = http://www.openexr.com/;
+    homepage = https://www.openexr.com/;
     license = licenses.bsd3;
     platforms = platforms.all;
   };
diff --git a/pkgs/development/libraries/openmpi/default.nix b/pkgs/development/libraries/openmpi/default.nix
index e597a26dad9f..17ad9e53005b 100644
--- a/pkgs/development/libraries/openmpi/default.nix
+++ b/pkgs/development/libraries/openmpi/default.nix
@@ -15,7 +15,7 @@ in stdenv.mkDerivation rec {
   name = "openmpi-${version}";
 
   src = with stdenv.lib.versions; fetchurl {
-    url = "http://www.open-mpi.org/software/ompi/v${major version}.${minor version}/downloads/${name}.tar.bz2";
+    url = "https://www.open-mpi.org/software/ompi/v${major version}.${minor version}/downloads/${name}.tar.bz2";
     sha256 = "02cpzcp113gj5hb0j2xc0cqma2fn04i2i0bzf80r71120p9bdryc";
   };
 
@@ -52,7 +52,7 @@ in stdenv.mkDerivation rec {
   doCheck = true;
 
   meta = with stdenv.lib; {
-    homepage = http://www.open-mpi.org/;
+    homepage = https://www.open-mpi.org/;
     description = "Open source MPI-3 implementation";
     longDescription = "The Open MPI Project is an open source MPI-3 implementation that is developed and maintained by a consortium of academic, research, and industry partners. Open MPI is therefore able to combine the expertise, technologies, and resources from all across the High Performance Computing community in order to build the best MPI library available. Open MPI offers advantages for system and software vendors, application developers and computer science researchers.";
     maintainers = with maintainers; [ markuskowa ];
diff --git a/pkgs/development/libraries/science/math/fenics/default.nix b/pkgs/development/libraries/science/math/fenics/default.nix
index 8134cc63eb02..4ae5ea522555 100644
--- a/pkgs/development/libraries/science/math/fenics/default.nix
+++ b/pkgs/development/libraries/science/math/fenics/default.nix
@@ -83,7 +83,7 @@ let
     '';
     meta = {
       description = "A domain-specific language for finite element variational forms";
-      homepage = http://fenicsproject.org/;
+      homepage = https://fenicsproject.org/;
       platforms = stdenv.lib.platforms.all;
       license = stdenv.lib.licenses.lgpl3;
     };
@@ -102,7 +102,7 @@ let
     '';
     meta = {
       description = "A compiler for finite element variational forms";
-      homepage = http://fenicsproject.org/;
+      homepage = https://fenicsproject.org/;
       platforms = stdenv.lib.platforms.all;
       license = stdenv.lib.licenses.lgpl3;
     };
@@ -117,7 +117,7 @@ let
     buildInputs = [ numpy six ];
     meta = {
       description = "Instant inlining of C and C++ code in Python";
-      homepage = http://fenicsproject.org/;
+      homepage = https://fenicsproject.org/;
       platforms = stdenv.lib.platforms.all;
       license = stdenv.lib.licenses.lgpl3;
     };
@@ -162,7 +162,7 @@ stdenv.mkDerivation {
   postInstall = "source $out/share/dolfin/dolfin.conf";
   meta = {
     description = "The FEniCS Problem Solving Environment in Python and C++";
-    homepage = http://fenicsproject.org/;
+    homepage = https://fenicsproject.org/;
     platforms = stdenv.lib.platforms.darwin;
     license = stdenv.lib.licenses.lgpl3;
   };
diff --git a/pkgs/development/lua-modules/generated-packages.nix b/pkgs/development/lua-modules/generated-packages.nix
index 835045bd7257..03651222a045 100644
--- a/pkgs/development/lua-modules/generated-packages.nix
+++ b/pkgs/development/lua-modules/generated-packages.nix
@@ -150,7 +150,7 @@ cjson = buildLuarocksPackage {
   propagatedBuildInputs = [ lua ];
 
   meta = with stdenv.lib; {
-    homepage = "http://www.kyne.com.au/~mark/software/lua-cjson.php";
+    homepage = "https://www.kyne.com.au/~mark/software/lua-cjson.php";
     description = "A fast JSON encoding/parsing module";
     license = {
       fullName = "MIT";
@@ -236,7 +236,7 @@ cyrussasl = buildLuarocksPackage {
   propagatedBuildInputs = [ lua ];
 
   meta = with stdenv.lib; {
-    homepage = "http://github.com/JorjBauer/lua-cyrussasl";
+    homepage = "https://github.com/JorjBauer/lua-cyrussasl";
     description = "Cyrus SASL library for Lua 5.1+";
     maintainers = with maintainers; [ vcunat ];
     license = {
@@ -385,7 +385,7 @@ lgi = buildLuarocksPackage {
   propagatedBuildInputs = [ lua ];
 
   meta = with stdenv.lib; {
-    homepage = "http://github.com/pavouk/lgi";
+    homepage = "https://github.com/pavouk/lgi";
     description = "Lua bindings to GObject libraries";
     license = {
       fullName = "MIT/X11";
@@ -480,7 +480,7 @@ lrexlib-gnu = buildLuarocksPackage {
   propagatedBuildInputs = [ lua ];
 
   meta = with stdenv.lib; {
-    homepage = "http://github.com/rrthomas/lrexlib";
+    homepage = "https://github.com/rrthomas/lrexlib";
     description = "Regular expression library binding (GNU flavour).";
     license = {
       fullName = "MIT/X11";
@@ -499,7 +499,7 @@ lrexlib-pcre = buildLuarocksPackage {
   propagatedBuildInputs = [ lua ];
 
   meta = with stdenv.lib; {
-    homepage = "http://github.com/rrthomas/lrexlib";
+    homepage = "https://github.com/rrthomas/lrexlib";
     description = "Regular expression library binding (PCRE flavour).";
     maintainers = with maintainers; [ vyp ];
     license = {
@@ -519,7 +519,7 @@ lrexlib-posix = buildLuarocksPackage {
   propagatedBuildInputs = [ lua ];
 
   meta = with stdenv.lib; {
-    homepage = "http://github.com/rrthomas/lrexlib";
+    homepage = "https://github.com/rrthomas/lrexlib";
     description = "Regular expression library binding (POSIX flavour).";
     license = {
       fullName = "MIT/X11";
@@ -567,7 +567,7 @@ lua-cmsgpack = buildLuarocksPackage {
   propagatedBuildInputs = [ lua ];
 
   meta = with stdenv.lib; {
-    homepage = "http://github.com/antirez/lua-cmsgpack";
+    homepage = "https://github.com/antirez/lua-cmsgpack";
     description = "MessagePack C implementation and bindings for Lua 5.1/5.2/5.3";
     license = {
       fullName = "Two-clause BSD";
@@ -955,7 +955,7 @@ luaposix = buildLuarocksPackage {
   propagatedBuildInputs = [ bit32 lua std_normalize ];
 
   meta = with stdenv.lib; {
-    homepage = "http://github.com/luaposix/luaposix/";
+    homepage = "https://github.com/luaposix/luaposix/";
     description = "Lua bindings for POSIX";
     maintainers = with maintainers; [ vyp lblasc ];
     license = {
diff --git a/pkgs/development/misc/amdadl-sdk/default.nix b/pkgs/development/misc/amdadl-sdk/default.nix
index c177d8fe03fd..5ef83ed77b3b 100644
--- a/pkgs/development/misc/amdadl-sdk/default.nix
+++ b/pkgs/development/misc/amdadl-sdk/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "API to access display driver functionality for ATI graphics cards";
-    homepage = http://developer.amd.com/tools/graphics-development/display-library-adl-sdk/;
+    homepage = https://developer.amd.com/tools/graphics-development/display-library-adl-sdk/;
     license = licenses.unfree;
     maintainers = [ maintainers.offline ];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/development/python-modules/distributed/default.nix b/pkgs/development/python-modules/distributed/default.nix
index 2fd6829bc464..da082643e0fd 100644
--- a/pkgs/development/python-modules/distributed/default.nix
+++ b/pkgs/development/python-modules/distributed/default.nix
@@ -54,7 +54,7 @@ buildPythonPackage rec {
 
   meta = {
     description = "Distributed computation in Python.";
-    homepage = http://distributed.readthedocs.io/en/latest/;
+    homepage = https://distributed.readthedocs.io/en/latest/;
     license = lib.licenses.bsd3;
     platforms = lib.platforms.x86; # fails on aarch64
     maintainers = with lib.maintainers; [ teh costrouc ];
diff --git a/pkgs/development/python-modules/faulthandler/default.nix b/pkgs/development/python-modules/faulthandler/default.nix
index c4d600ec994e..d69c320ccaac 100644
--- a/pkgs/development/python-modules/faulthandler/default.nix
+++ b/pkgs/development/python-modules/faulthandler/default.nix
@@ -13,6 +13,6 @@ buildPythonPackage rec {
     description = "Dump the Python traceback";
     license = stdenv.lib.licenses.bsd2;
     maintainers = with stdenv.lib.maintainers; [ sauyon ];
-    homepage = http://faulthandler.readthedocs.io/;
+    homepage = https://faulthandler.readthedocs.io/;
   };
 }
diff --git a/pkgs/development/python-modules/flask-restful/default.nix b/pkgs/development/python-modules/flask-restful/default.nix
index 41735c4d1c6e..89cc47cbcfbc 100644
--- a/pkgs/development/python-modules/flask-restful/default.nix
+++ b/pkgs/development/python-modules/flask-restful/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [ flask six pytz aniso8601 pycrypto ];
 
   meta = with lib; {
-    homepage = "http://flask-restful.readthedocs.io/";
+    homepage = "https://flask-restful.readthedocs.io/";
     description = "REST API building blocks for Flask";
     license = licenses.bsd3;
   };
diff --git a/pkgs/development/python-modules/gentools/default.nix b/pkgs/development/python-modules/gentools/default.nix
index b9d272ba0e50..57105f87a7c0 100644
--- a/pkgs/development/python-modules/gentools/default.nix
+++ b/pkgs/development/python-modules/gentools/default.nix
@@ -24,7 +24,7 @@ buildPythonPackage rec {
   meta = with lib; {
     description = "Tools for generators, generator functions, and generator-based coroutines";
     license = licenses.mit;
-    homepage = http://gentools.readthedocs.io/;
+    homepage = https://gentools.readthedocs.io/;
     maintainers = with maintainers; [ mredaelli ];
   };
 
diff --git a/pkgs/development/python-modules/habanero/default.nix b/pkgs/development/python-modules/habanero/default.nix
index 09d82d74f2b1..b58d4a300201 100644
--- a/pkgs/development/python-modules/habanero/default.nix
+++ b/pkgs/development/python-modules/habanero/default.nix
@@ -22,7 +22,7 @@ buildPythonPackage rec {
 
   meta = {
     description = "Python interface to Library Genesis";
-    homepage = http://habanero.readthedocs.io/en/latest/;
+    homepage = https://habanero.readthedocs.io/en/latest/;
     license = lib.licenses.mit;
     maintainers = [ lib.maintainers.nico202 ];
   };
diff --git a/pkgs/development/python-modules/hiro/default.nix b/pkgs/development/python-modules/hiro/default.nix
index b2633e6c9d24..4d9ebdb0129e 100644
--- a/pkgs/development/python-modules/hiro/default.nix
+++ b/pkgs/development/python-modules/hiro/default.nix
@@ -12,7 +12,7 @@ buildPythonPackage rec {
 
   meta = with stdenv.lib; {
     description = "Time manipulation utilities for Python";
-    homepage = http://hiro.readthedocs.io/en/latest/;
+    homepage = https://hiro.readthedocs.io/en/latest/;
     license = licenses.mit;
     maintainers = with maintainers; [ nyarly ];
   };
diff --git a/pkgs/development/python-modules/papis/default.nix b/pkgs/development/python-modules/papis/default.nix
index a1fdeec28f83..b2ae7cf73ed9 100644
--- a/pkgs/development/python-modules/papis/default.nix
+++ b/pkgs/development/python-modules/papis/default.nix
@@ -47,7 +47,7 @@ buildPythonPackage rec {
 
   meta = {
     description = "Powerful command-line document and bibliography manager";
-    homepage = http://papis.readthedocs.io/en/latest/;
+    homepage = https://papis.readthedocs.io/en/latest/;
     license = lib.licenses.gpl3;
     maintainers = with lib.maintainers; [ nico202 teto ];
   };
diff --git a/pkgs/development/tools/build-managers/doit/default.nix b/pkgs/development/tools/build-managers/doit/default.nix
index e2689f2c2652..6fc03a550940 100644
--- a/pkgs/development/tools/build-managers/doit/default.nix
+++ b/pkgs/development/tools/build-managers/doit/default.nix
@@ -25,7 +25,7 @@ in python3Packages.buildPythonApplication {
   checkPhase = "py.test";
 
   meta = with stdenv.lib; {
-    homepage = http://pydoit.org/;
+    homepage = https://pydoit.org/;
     description = "A task management & automation tool";
     license = licenses.mit;
     longDescription = ''
diff --git a/pkgs/development/tools/phantomjs/default.nix b/pkgs/development/tools/phantomjs/default.nix
index 43fdeff9090b..2c37d71e75ce 100644
--- a/pkgs/development/tools/phantomjs/default.nix
+++ b/pkgs/development/tools/phantomjs/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
       - Network Monitoring
     '';
 
-    homepage = http://phantomjs.org/;
+    homepage = https://phantomjs.org/;
     license = lib.licenses.bsd3;
 
     maintainers = [ lib.maintainers.bluescreen303 ];
diff --git a/pkgs/development/tools/phantomjs2/default.nix b/pkgs/development/tools/phantomjs2/default.nix
index 51cecd81ecac..a37de2a3f628 100644
--- a/pkgs/development/tools/phantomjs2/default.nix
+++ b/pkgs/development/tools/phantomjs2/default.nix
@@ -105,7 +105,7 @@ in stdenv.mkDerivation rec {
       - Network Monitoring
     '';
 
-    homepage = http://phantomjs.org/;
+    homepage = https://phantomjs.org/;
     license = licenses.bsd3;
 
     maintainers = [ maintainers.aflatter ];
diff --git a/pkgs/tools/audio/mpdas/default.nix b/pkgs/tools/audio/mpdas/default.nix
index ca41c8a9eb3a..08bd864792bb 100644
--- a/pkgs/tools/audio/mpdas/default.nix
+++ b/pkgs/tools/audio/mpdas/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Music Player Daemon AudioScrobbler";
-    homepage = http://50hz.ws/mpdas/;
+    homepage = https://50hz.ws/mpdas/;
     license = licenses.bsd3;
     maintainers = [ maintainers.taketwo ];
     platforms = platforms.all;
diff --git a/pkgs/tools/security/cowpatty/default.nix b/pkgs/tools/security/cowpatty/default.nix
index de34005401b1..c5ace5d2e8c4 100644
--- a/pkgs/tools/security/cowpatty/default.nix
+++ b/pkgs/tools/security/cowpatty/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   meta = {
     description = "Offline dictionary attack against WPA/WPA2 networks";
     license = licenses.gpl2;
-    homepage = http://www.willhackforsushi.com/?page_id=50;
+    homepage = https://www.willhackforsushi.com/?page_id=50;
     maintainers = with maintainers; [ nico202 ];
     platforms = platforms.linux;
   };
diff --git a/pkgs/tools/security/ossec/default.nix b/pkgs/tools/security/ossec/default.nix
index 803380dbb4ad..7231f6821daf 100644
--- a/pkgs/tools/security/ossec/default.nix
+++ b/pkgs/tools/security/ossec/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "ossec-client-2.6";
 
   src = fetchurl {
-    url = http://www.ossec.net/files/ossec-hids-2.6.tar.gz;
+    url = https://www.ossec.net/files/ossec-hids-2.6.tar.gz;
 
     sha256 = "0k1b59wdv9h50gbyy88qw3cnpdm8hv0nrl0znm92h9a11i5b39ip";
   };
diff --git a/pkgs/tools/typesetting/djvu2pdf/default.nix b/pkgs/tools/typesetting/djvu2pdf/default.nix
index eb560003a2cb..fd2cf133c0ac 100644
--- a/pkgs/tools/typesetting/djvu2pdf/default.nix
+++ b/pkgs/tools/typesetting/djvu2pdf/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Convert DjVu files to PDF files";
-    homepage = http://0x2a.at/s/projects/djvu2pdf;
+    homepage = https://0x2a.at/s/projects/djvu2pdf;
     license = stdenv.lib.licenses.gpl2;
     platforms = stdenv.lib.platforms.all;
     inherit version;
diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index e0e55fd507b9..3db604b9e325 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -16133,7 +16133,7 @@ let
     };
     propagatedBuildInputs = [ TermReadKey TextAutoformat ];
     meta = with stdenv.lib; {
-      homepage = http://metacpan.org/release/Term-Shell;
+      homepage = https://metacpan.org/release/Term-Shell;
       description = "A simple command-line shell framework";
       license = with licenses; [ artistic1 gpl1Plus ];
     };